Raspberry Pi Soldering Microscope

Hello,

I have a Raspberry Pi Zero W that has Wifi broken for a few years in a drawer, I decided to recycle it into a low-cost soldering microscope.
The Pi is connected to HDMI monitor and show the picture without latency, the focus is manually adjusted on camera.

List of hardware used:
- Raspberry Pi Zero starter kit with acrylic case
- LED ring 5V 78mm with JST male plug
- Microphone arm desk stand
- RPI Camera 5MP RPI3232

The ring is glued to its support and all the parts are secured with 2 screws.

For the software part I followed this guide : https://www.instructables.com/Raspberry-Pi-Zero-HDMIWiFi-Soldering-Microscope/

It's old and based on Raspbian Jessie, that can be downloaded here : https://downloads.raspberrypi.org/raspbian_lite/images/raspbian_lite-2017-07-05/2017-07-05-raspbian-jessie-lite.zip

The repository need to be modified : sudo nano /etc/apt/sources.list
Replace content by : deb http://legacy.raspbian.org/raspbian/ jessie main contrib non-free rpi

Command to d